冗余模塊 BMXP341000H
:先外后內(nèi)
使用工具:電路在線維修儀
如果情況允許,是找一塊與被維修板一樣的好板作為參照,然后使用一起的雙棒VI曲線掃描功能對(duì)兩塊板進(jìn)行好、壞對(duì)比測(cè)試,起始的對(duì)比點(diǎn)可以從端口開始,然后由表及里,尤其是對(duì)電容的對(duì)比測(cè)試,可以彌補(bǔ)萬用表在線難以測(cè)出是否漏電的缺憾。
:先易后難
使用工具:電路在線維修儀、電烙鐵、記號(hào)筆
為提高測(cè)試效果,在對(duì)電路板進(jìn)行在線功能測(cè)試前,應(yīng)對(duì)被修板做一些技術(shù)處理,以盡量削弱各種干擾對(duì)測(cè)試進(jìn)程帶來的負(fù)面影響。具體措施是:
1、測(cè)試前的準(zhǔn)備
將晶振短路,對(duì)大的電解電容要焊下一條腳使其開路,因?yàn)殡娙莸某浞烹娡瑯右材軒砀蓴_。
2、采用排除法對(duì)器件進(jìn)行測(cè)試
對(duì)器件進(jìn)行在線測(cè)試或比較過程中,凡是測(cè)試通過(或比較正常)的器件,請(qǐng)直接確認(rèn)測(cè)試結(jié)果,以便記錄;對(duì)測(cè)試未通過(或比較超差)的,可再測(cè)試一遍,若還是未通過,也可先確認(rèn)測(cè)試結(jié)果,就這樣一直測(cè)試下去,直到將板上的器件測(cè)試(或比較)完,然后再回過頭來處理那些未通過測(cè)試(或比較超差)的器件。對(duì)未通過功能在線測(cè)試的器件,儀器還提供了一種不太卻又比較實(shí)用的處理方法,由于儀器對(duì)電路板的供電可以通過測(cè)試夾施加到器件相應(yīng)的電源與地腳,若對(duì)器件的電源腳實(shí)施刃割,則這個(gè)器件將脫離電路板供電系統(tǒng),這時(shí)再對(duì)該器件進(jìn)行在線功能測(cè)試,由于電路板上的其他器件將不會(huì)再起干擾作用,實(shí)際測(cè)試效果等同于“準(zhǔn)離線”,測(cè)準(zhǔn)率將獲得很大提高。
3、用ASA-VI曲線掃描測(cè)試對(duì)測(cè)試庫尚未涵蓋的器件進(jìn)行比較測(cè)試
由于ASA-VI智能曲線掃描技術(shù)能適用于對(duì)任何器件的比較測(cè)試,只要測(cè)試夾能將器件夾住,再有一塊參照板,通過對(duì)比測(cè)試,同樣對(duì)器件具備較強(qiáng)的故障偵測(cè)能力。該功能彌補(bǔ)了器件在線功能測(cè)試要受制于測(cè)試庫的不足,拓展了儀器對(duì)電路板故障的偵測(cè)范圍?,F(xiàn)實(shí)中往往會(huì)出現(xiàn)無法找到好板做參照的情景,而且待修板本身的電路結(jié)構(gòu)也無任何對(duì)稱性,在這種情況下,ASA-VI曲線掃描比較測(cè)試功能起不了作用,而在線功能測(cè)試由于器件測(cè)試庫的不完全,無法完成對(duì)電路板上每一個(gè)器件都測(cè)試一遍,電路板依然無法修復(fù),這兒就是電路在線維修儀的局限,就跟沒有包治百病的藥一樣。
:先靜后動(dòng)
由于電路在線維修儀目前只能對(duì)電路板上的器件進(jìn)行功能在線測(cè)試和靜態(tài)特征分析,是否完全修好必須要經(jīng)過整機(jī)測(cè)試檢驗(yàn),因此,在檢驗(yàn)時(shí)先檢查一下設(shè)備的電源是否按要求正確供給到電路板上。
冗余模塊 BMXP341000H
BMEP581020 | BMXP341000H |
BMEP581020 | BMXP342000 |
BMEP582040 | BMXP3420102 |
BMEP583020 | BMXP3420102CL |
BMEP584020 | BMXP342020 |
BMEP584040 | BMXP3420302 |
BMEP585040 | BMXP3420302CL |
BMEP586040 | BMXNOE0100 |
BMEH582040 | BMXNOE0110 |
BMEH584040 | BMXNOC0401 |
BMEH586040 | BMXRMS008MP |
490NAC0100 | BMXRMS008MPF |
490NAC0201 | BMXRMS128MPF |
BMEH5820KA | BMXRWSB000M |
BMEH5820KD | BMXRWSC016M |
BMEH5840KA | BMXRWSFC032M |
BMEH5840KD | BMXP341000H |
BMENOC0301 | BMXP342020H |
BMENOC0311 | BMXP3420302H |
BMENOC0321 | BMXNOE0100H |
BMXNGD0100 | BMXNOE0110H |
BMENOP0300 | BMEP584040S |
BMENOS0300 | BMEP58CPROS3 |
BMECXM0100 | BMXCPS4002S |
BMXRMS004GPF | BMXSDI1602 |
BMEP581020H | BMXSDO0802 |
BMEP582020H | BMXSRA0405 |
BMEP582040H | BMXSAI0410 |
BMEP585040C | BMEH586040C |
BMEP586040C | BMENOC0301C |
BMEH582040C | BMENOC0311C |
BMEH584040C | BMENOC0321C |
BMENOS0300C | BMENOP0300C |
140CPU21304 | 140ACO02000 |
140CPU42401 | 140AII33010 |
140CPU42402 | 140AMM09000 |
140CPU43412 | 140ARI03000 |
140CPU43412A | 140ARI03010 |
140CPU43412C | 140ATI03000 |
140CPU43412U | 140AVI03000 |
140CPU53414 | 140AVO02000 |
140CPU53414A | 140CFA04000 |
140CPU53414B | 140CFB03200 |
140CPU65150 | 140CFC03200 |
140CPU67160 | 140CFD03200 |
140CRA21110 | 140CFE03200 |
140CRA21120 | 140CFG01600 |
140CRA21210 | 140CFH00800 |
140CRA93100 | 140CFI00800 |
140CRA93101 | 140CFI08000 |
140CRA93200 | 140CFJ00400 |
140CRP93100 | 140CFK00400 |
140CRP93200 | 140CFU00600 |
140DA084210 | 140CFU40000 |
140DA154000 | 140CFX00110 |
140DA155300 | 140CFX00210 |
140DAI34000 | 140CHS11000 |
140DAI35300 | 140CHS32000 |
140DAI44000 | 140CHS41020 |
140DAI45300 | 140CPS11100 |
140DAI54000 | 140CPS11400 |
140DAI54300 | 140CPS11410 |
140DAI55300 | 140CPS11420 |
CACR-PR01AA4AH |
CACR-PR02AD3NR |
CACR-PR03AA4AH |
CACR-PR03BCAF |
CACR-PR05AA4AH |
CACR-PR05BCAF |
CACR-PR20BCAF |
CACR-PR30BCAF |
CACR-PRA5AA4AH |
CACR-SR01AA2AH |
CACR-SR01AB1ER |
CACR-SR01AE1ER |
CACR-SR01AY1SR |
CACR-SR02AD1ER |
CACR-SR02AD1FR |
CACR-SR02AY1SR |
CACR-SR03AA2AH |
CACR-SR03AB1ER |
CACR-SR03AB2ER |
CACR-SR03AC1ER |
CACR-SR03AC1FU |
CACR-SR03AD1KR |
CACR-SR03BB1AF |
CACR-SR03BB1AM |
CACR-SR03BB1BF |
CACR-SR03BB1CS |
CACR-SR03BB1ES |
CACR-SR03BB1HS |
CACR-SR03BC1AM |
CACR-SR03BC1ES |
CACR-SR03BE12M |
CACR-SR03SB1AF |
CACR-SR03SB1BF |
CACR-SR03SZ1SS |
CACR-SR03TB5BM |
CACR-SR03TZ0SM |
CACR-SR03TZ6SF |
CACR-SR03TZ6SS |
CACR-SR05AA2AH |
CACR-SR05AB1ER |
CACR-SR05AC1ER |
CACR-SR05AY1SR |
CACR-SR05BA1AM |
CACR-SR05BB1AF |
CACR-SR05BB1AM |
CACR-SR05BB1BF |
CACR-SR05BB1BS |
CACR-SR05BB1ES |
CACR-SR05BC1ES |
CACR-SR05BZ1SF |
CACR-SR05BZ1SS |
CACR-SR05SB1AF |
CACR-SR05SB1BF |
CACR-SR05SZ1SS |
CACR-SR06TZ6SM |
CACR-SR07AC1CS |
CACR-SR07AC1ER |
CACR-SR07AC1ES |
CACR-SR07BB1AM |
CACR-SR07BZ1SM |
CACR-SR09TZ0SF |
CACR-SR09TZ6SF |
CACR-SR10BY1SG |
CACR-SR10BZ1SF |
CACR-SR10SB1BF |
CACR-SR10SB1DF |
CACR-SR12TB5BM |
CACR-SR12TB6AF |